Part # LM828 datasheet

Part Manufacturer: National Semiconductor

National Semiconductor

Part Description: LM828 Switched Capacitor Voltage Converter


Part Details:

LM828 July 2000 Switched LM828Switched Capacitor Voltage ConverterGeneral Description Features Capacitor The LM828 CMOS charge-pump voltage converter inverts a n Inverts Input Supply Voltage positive voltage in the range of +1.8V to +5.5V to the corre- n SOT-23-5 Package sponding negative voltage of -1.8V to -5.5V. The LM828 n 20 Typical Output Impedance uses two low cost capacitors to provide up to 25 mA of n 97% Typical Conversion Efficiency at 5 mA output current. The LM828 operates at 12 kHz switching frequency to re- Applications duce output resistance and voltage ripple. With an operating V current of only 40 µA (operating efficiency greater than 96% n Cellular Phones oltage with most loads), the LM828 provides ideal performance for n Pagers battery powered systems. The device is in a tiny SOT-23-5 n PDAs package. n Operational Amplifier Power Supplies n Interface Power Supplies n Handheld Instruments Converter Basic Application Circuits Voltage Inverter DS100137-1 +5V to -10V Converter DS100137-2 © 2001 National Semiconductor Corporation DS100137 www.national.com Absolute Maximum Ratings (Note 1) T (Note 3) 150°C JMax LM828 If Military/Aerospace specified devices are required, (Note 3) 300°C/W JA please contact the National Semiconductor Sales Office/ Operating Junction -40°C to 85°C Distributors for availability and specifications. Temperature Range


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LM828.pdf Datasheet